Saturday, June 27, 2015

Advice on Constructive Modal Logic

This is a picture of Dana Scott when he wrote "Advice on Modal Logic". The paper is fun (it's from 1970, but not freely available, it seems), the subject is fun and there is an awful lot of more fun things to do with it. One of them is constructive or intuitionistic modal logics. Like Modal Type Theory.

But I am feeling tired of trying to force philosophers and computer scientists to collaborate on the subject. If your friends don't want to talk to your other friends, sometimes you just have to let it go.

At least for a while. Mathematical problems can be like wine or cheese, some are better fresh,  you attack them fiercely and win or lose. Some you need to put away,  to mature (or  not), and hope that the process will improve them.

Together with Charles Stewart and Natasha Alechina, I wrote one more note on that. A very preliminary version is here. And I talked about it in Berkeley's Logic Colloquium in March. Slides are available. For my part, I will concentrate on the  'small picture' now, the details that I think I know do work. Instead of trying to think about why it all hangs together, if  indeed it does.

Frank Pfenning has a lovely slide deck, celebrating Scott's 70th birthday here.

Saturday, June 13, 2015

Plans, plans and expectations

The picture is from Doghousediaries and if I could draw to save my life I would add a few crocodiles to the pond. But I cannot, so the rocks, the ladders and the hail will have to do.

Also the fact that it took me the best part of four hours to find this cartoon again, would be a good indicator that I don't give up easily. yes, I don't.

But sometimes it's good to remind oneself that there is always a different way of doing things and given enough time, I will find it.
Here are slides of a talk I gave in October 2012. The picture is very appropriate.

Sunday, June 7, 2015

Logic Spring at Stanford

Last weekend we had the 4th CSLI Workshop on Logic, Rationality & Intelligent Interaction. (This is Johan van Benthem closing the meeting.)

Johan invited me to talk about logic work on language and, vain that  I am, I could not resist and said yes. and then panicked about what, how, if, etc...

In the end it wasn't the best talk ever, but I think I managed to convey what I want to do and how I intend to do it. At least a bit. Here are the slides, warts and all.